fix: Fix broken build (#453)

The clone optimization PR didn't have the latest changes for "azure_policy".
Integration resulted in compile errors.

Also fix errors due to updated clippy lints.

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

src/lexer.rs

@@ -120,7 +120,7 @@ impl cmp::Eq for SourceStr {}
 
 impl cmp::PartialOrd for SourceStr {
     fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
-        Some(self.text().cmp(other.text()))
+        Some(self.cmp(other))
     }
 }